# #

The rotation of the arm $$OA$$ rotates about $$O$$ such that $$\theta={{params.n1}}t^2$$, where $$\theta$$ is in radians and $$t$$ in seconds. Collar $$B$$ slides along the arm such that its distance to $$O$$ is $$r={{params.n2}} - {{params.n3}}t^2$$, where $$r$$ is in meters, and $$t$$ in seconds.

## Part 1#

After the arm $$OA$$ has rotated through $${{params.theta}}^\circ$$, what is the magnitude of the relative acceleration of the collar $$B$$ with respect to the arm?

Please enter in a numeric value in $$m/s^2$$.

## Part 2#

What is the total relative speed of collar $$B$$ with respect to the arm?

Please enter in a numeric value in $$m/s$$.